MathsightMathsight
Home › Grade Four › Lesson 18

Adding and Subtracting Fractions

Grade Four · Lesson 18 · 3:35 · Animated lesson with English narration

Want the rest of Grade Four?

159 animated lessons with worksheets, progress tracking and offline viewing — in the Mathsight app.

Download for iOS Or download the Grade Four workbook PDF

Downloads

Free for this lesson — no sign-in.

Lesson worksheet

PDF · English

Download

Subtitles

SRT · English

Download

Transcript

One fifth plus two fifths equals one plus two over five, equals three fifths. One fifth. Two fifths. Three fifths. Five eighths minus two eighths equals five

minus two over eight, equals three eighths. Five eighths. Two eighths. Three eighths. Two sevenths plus three sevenths equals two plus three over seven, equals five sevenths. Two sevenths.

Three sevenths. Five sevenths. Six elevenths minus four elevenths equals six minus four over eleven, equals two elevenths. Six elevenths. Four elevenths. Two elevenths.

Four ninths plus three ninths equals four plus three over nine, equals seven ninths. Four ninths. Three ninths. Seven ninths. Seven twelfths minus five twelfths equals seven

minus five over twelve, equals two twelfths. Seven twelfths. Five twelfths. Two twelfths. Three tenths plus four tenths equals three plus four over ten, equals seven tenths. Three tenths. Four tenths.

Seven tenths. Eight fifteenths minus three fifteenths equals eight minus three over fifteen, equals five fifteenths. Eight fifteenths. Three fifteenths. Five fifteenths.

Five thirteenths plus six thirteenths equals five plus six over thirteen, equals eleven thirteenths. Five thirteenths. Six thirteenths. Eleven thirteenths.

Eleven sixteenths minus seven sixteenths equals eleven minus seven over sixteen, equals four sixteenths. Eleven sixteenths. Seven sixteenths. Four sixteenths.

Three eighths plus two eighths equals three plus two over eight, equals five eighths. Three eighths. Two eighths. Five eighths.

Transcript generated from the lesson narration.

Get the full Grade Four course

All lessons with worksheets and offline viewing, in the Mathsight app.